5. The Book of Mosques and Places of Prayer - كتاب الْمَسَاجِدِ وَمَوَاضِعِ الصَّلاَةِ
39) Chapter: Time For The Night Prayer And Its Delay
Jabir b. Samura reported:
The Messenger of Allah (ﷺ) used to observe prayers like your prayers, but he would delay the prayer after nightfall to a little after the time you observed it, and he would shorten the prayer.